KLA-Tencor–The chipmaker increased its quarterly dividend by five cents to 50 cents per share, and also announced a $1 billion stock buyback.

PetSmart–Shareholder Longview Asset Management is calling for the pet supplies retailer to consider a sale of the company. That comes just a few days after major shareholder Jana Partners asked PetSmart to explore a sale. The company has said it is evaluating potential changes.

Fresh Market–The organic grocer's stock was downgraded to "sell" from "neutral" at Goldman Sachs, which cites increasing competition, among other factors.

Groupon–The stock was upgraded to "buy" from "neutral" at B. Riley, which also increased its price target to $9.50 per share from $6.

Guess–The apparel retailer's stock was upgraded to "overweight" from "neutral" at Piper Jaffray, which said the company's southern European market is showing signs of stabilizing.

Tesla–The electric car maker is facing a trademark infringement lawsuit in China. Tesla had announce the settlement of a trademark dispute between the company and a Chinese businessman in January, but he's now taking Tesla to court and demanding it stop all sales and marketing activities in China.

Intel–The chip maker and Dell have joined with Samsung on standards for interconnected household electronics. The alliance pits those companies against another standards group backed by Qualcomm.

United Airlines–The airline will outsource more than 630 union jobs at 12 airports in a move to cut costs. The affected jobs include gate agents and baggage handlers.

American Apparel—Lender Lion Capital is stepping up pressure on the retailer to repay a $10 million loan, according to a Reuters report.